Introduction to NodeJs

High level overview of what NodeJs is and how it can do cool things.

Transcript

1. Hello, my name is node.js but you may call me "node"
2. Before We Start
3. We need: Knowledge of JavaScript Web Browser Terminal
4. What about help? nodejs.org docs #node.js on Freenode IRC StackOverflow General searching for javascript, node.js, or npm
5. What is Node?
6. According to Node Node's goal is to provide an easy way to build scalable network programs
7. According to me NodeJs is a super awesome tool that allows me to take over the world.
8. But seriously... JavaScript ECMAScript 5 No ugly DOM! Built on top of V8 Single threaded Asynchronous, non-blocking I/O Windows, Mac, Linux
9. Let's get started!
10. Step 1 Go to http://nodejs.org Click the `install` button. Follow the instructions.
11. Step 2 Gain an understanding of: Prototypal Inheritance Closures Event Loop
12. Step 2a JavaScript the Good Parts - Douglas Crockford http://livestre.am/JC3U or http://amzn.com/B002AWX8BO Eloquent JavaScript - Marijn Haverbeke http://eloquentjavascript.net/ JavaScript Design Patterns - Addy Osmani http://addyosmani.com/resources/essentialjsdesignpatterns/book
13. Step 3
14. Step 4 Profit Global Domination You get the point
15. Doing Good with NodeJs Event Driven Promises Callbacks
16. Event Driven require('events') Extend with EventEmitter Simple API on once removeListener removeAllListeners emit
17. Promises Relatively new to JavaScript promisejs.org npm packages q promised-io deferred promise.then(successFn, errorFn, progressFn)
18. Callbacks `(err, data)` pattern `.bind` to maintain scope ( ) maintains variables where defined http://www.digital-web.com/articles/scope_in_javascript/ More on JavaScript patterns in the online book(s).
19. Package Management npm 85,000+ packages Packages can be global or isolated to project
20. Building Packages npm init package.json configuration for node module dependency information command line load point (`bin`) npm install module npm install module --save Saved in ./node_modules/
21. Usage require('mod') core or npm require('./mod') relative to app require('/home/mod') absolute from drive
22. Command Line which node HashBang (#!) path +x the js file to it's executable make it installable via npm
23. Demo!
24. Web Server & Apps http clusters, PM2 ExpressJs, HapiJs, Restify Socket.io ( ) nodemon database MongoDb MySQL Postgres http://caniuse.com/websockets
25. Demo!
26. Don't Use Node for... Number Crunching (IEEE 754 "Double") 0.1 + 0.2 === 0.3 // false Synchronous I/O calls Shell Scripting * Making toast ? ( ) http://youtu.be/MqHDDtVYJRI http://survivejs.com/current_state/might_run_on_toaster.html
27. Thanks! Me: Anthony Pipkin @apipkin http://a.pipk.in http://github.com/apipkin http://linkedin.com/in/apipkin Questions?
28. Interesting Links http://www.toptal.com/javascript/guide-to-full-stack- javascript-initjs http://www.toptal.com/nodejs/why-the-hell-would-i-use- node-js http://wintellect.com/blogs/dbanister/stop-fighting-node.js- in-the-enterprise